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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1924 | $url = get_option( 'siteurl' ); |
| 1925 | else |
| 1926 | $url = get_blog_option( $blog_id, 'siteurl' ); |
| 1927 | |
| 1928 | $url = str_replace( 'http://', "{$scheme}://", $url ); |
| 1929 | |
| 1930 | if ( !empty( $path ) && is_string( $path ) && strpos( $path, '..' ) === false ) |
| 1931 | $url .= '/' . ltrim( $path, '/' ); |
| 1932 | |
| 1933 | return apply_filters( 'site_url', $url, $path, $orig_scheme, $blog_id ); |
| 1934 | } |
| 1935 | |
| 1936 | /** |
| 1937 | * Retrieve the url to the admin area for the current site. |
| 1938 | * |
| 1939 | * @package WordPress |
| 1940 | * @since 2.6.0 |
| 1941 | * |
| 1942 | * @param string $path Optional path relative to the admin url |